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Air Show
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Perform 2 aerial gestures before touching the ground in co-op
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Asking for Trouble
|
Taunt GLaDOS in front of a camera in each of the five co-op courses
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Bridge Building
|
Complete all test chambers in the Hard-Light Surfaces co-op course
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Bridge Over Troubling Water
|
Complete the first Hard Light Bridge test
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Can't Touch This
|
Dance in front of a turret blocked by a hard light bridge in co-op
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Confidence Building
|
Complete all test chambers in the Mass and Velocity co-op course
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Door Prize
|
Examine all the vitrified test chamber doors
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Drop Box
|
Place a cube on a button without touching the cube
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Dual Pit Experiment
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Do the same test twice
|
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Empty Gesture
|
Drop your co-op partner in goo while they are gesturing by removing the bridge under them
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Final Transmission
|
Find the hidden signal in one of the Rat Man's dens
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Four Ring Circus
|
Enter 4 different portals without touching the ground in co-op
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Friends List with Benefits
|
While playing co-op, hug 3 different people on your friends list
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Gesticul-8
|
Perform all 8 gestures of your own volition in co-op
|
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Good listener
|
Take GLaDOS' escape advice
|
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High Five
|
Celebrate your cooperative calibration success
|
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Iron Grip
|
Never lose a cube in Chamber 6 of the Mass and Velocity co-op course
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Lunacy
|
That just happened
|
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Narbacular Drop
|
Place a portal under your co-op partner while they are gesturing
|
|
No Hard Feelings
|
Save a turret from redemption
|
|
Obstacle Building
|
Complete all test chambers in the Excursion Funnels co-op course
|
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Overclocker
|
Complete Test Chamber 10 in 70 seconds
|
|
Party of Three
|
Find the hidden companion cube in co-op test chamber
|
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Pit Boss
|
Show that pit who's boss
|
|
Portal Conservation Society
|
Complete Chamber 3 in the Hard-Light Surfaces co-op course using only 5 total portal placements
|
|
Portrait of a Lady
|
Find a hidden portrait
|
|
Preservation of Mass
|
Break the rules in Test Chamber 07
|
|
Professor Portal
|
After completing co-op, complete Calibration Course online with a friend who hasn't played before
|
|
Pturretdactyl
|
Use an Aerial Faith Plate to launch a turret
|
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Rock Portal Scissors
|
Win 3 co-op games of rock-paper-scissors in a row
|
|
SaBOTour
|
Make a break for it
|
|
Scanned Alone
|
Stand in a defective turret detector
|
|
Schrodinger's Catch
|
Catch a blue-painted box before it touches the ground
|
|
Ship Overboard
|
Discover the missing experiment
|
|
Smash TV
|
Break 11 test chamber monitors
|
|
Stalemate Associate
|
Press the button!
|
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Still Alive
|
Complete Course 4 with neither you nor your co-op partner dying
|
|
Stranger Than Friction
|
Master the Propulsion Gel
|
|
Tater Tote
|
Carry science forward
|
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Team Building
|
Complete all test chambers in the Team Building co-op course
|
|
The Part Where He Kills You
|
This is that part
|
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Triple Crown
|
Solve 3 co-op chambers in the Mass and Velocity course in under 60 seconds each
|
|
Tunnel of Funnel
|
Master the Excursion Funnel
|
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Vertically Unchallenged
|
Master the Repulsion Gel
|
|
Wake Up Call
|
Survive the manual override
|
|
White Out
|
Complete the first Conversion Gel test
|
|
You Made Your Point
|
Refuse to solve the first test in Chapter 8
|
|
You Monster
|
Reunite with GLaDOS
|
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You Saved Science
|
Complete all test chambers in all courses of co-op
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